FIRE_003 (88, 9) Recall how many fire bottles are dedicated to the cargo fire system and that they are separate from the engine / APU fire bottles:

Cargo fire suppression is accomplished through the use of 2 fire bottles, which are separate from the bottles used for the engines and APU.

FIRE_004 (88, 9) Recall the cockpit indications of a cargo fire, and how to silence the aural warning:

If smoke and/or heat is detected in a cargo compartment, the flight crew will be alerted by: - The red CARGO FIRE light on the OAP - MASTER WARNING lights on the glareshield - A high pitched tone from the aural alerter which can be silenced by pushing the FIRE BELL OFF button between the engine fire handles or the MASTER WARNING lights. - The fire light on the cargo fire control panel from the alarming compartment. - In addition, the ARMED light of the alarming compartment will illuminate with BTL 1 DISCH light to indicate automatic suppression system arming has occurred.

FIRE_006 (88, 9) Recall how the cargo fire detection system senses both heat and smoke:

The cargo fire detection system is accomplished through the use of a dual loop system in each smoke detector unit. Each unit incorporates two smoke detector and two heat sensors. One smoke detector and one heat sensor make up one loop.

FIRE_007 (88, 9) Recall the APU and engines share 2 fire bottles:

The fire extinguishing system consists of 2 fire bottles. Each bottle has separate discharge heads and distribution lines to each engine and the APU.

FIRE_008 (88, 9) Recall the function of the APU Fire Control switch:

The APU FIRE CONT Switch is a two position switch. NORM - Normal position. OFF &amp; AGENT ARM - Immediately shuts down APU and arms the fire extinguishers. The external APU FIRE light remains illuminated and the fire warning horn sounds until the fire is extinguished.

FIRE_009 (88, 9) Recall what actions take place when the engine fire handle is pulled:

Bottle #1 is a high rate discharge bottle that is used to rapidly flood the affected cargo compartment with halon and smother the fire. Bottle #2 is a low rate discharge bottle that slowly releases halon into the cargo compartment, extending fire suppression effectiveness.